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Summary
Dr. Thomas Defer is an internal medicine physician who graduated from the University of Missouri Columbia School of Medicine. With 37 years of experience in clinical practice, he has developed extensive expertise in managing complex internal medicine conditions. His long career has focused on comprehensive adult healthcare, emphasizing the diagnosis and treatment of chronic medical conditions.
Dr. Defer practices in Saint Louis and maintains affiliations with several respected healthcare institutions, including Barnes Jewish Hospital, Christian Hospital, Missouri Baptist Medical Center, and Saint Louis Children's Hospital. He specializes in treating heart failure and chronic kidney disease, helping patients manage these serious conditions with personalized care plans. His practice also includes expertise in sleep apnea treatment and diagnostic procedures such as dobutamine stress echocardiograms and pulmonary function testing.
Dr. Defer practices in Saint Louis and maintains affiliations with several respected healthcare institutions, including Barnes Jewish Hospital, Christian Hospital, Missouri Baptist Medical Center, and Saint Louis Children's Hospital. He specializes in treating heart failure and chronic kidney disease, helping patients manage these serious conditions with personalized care plans. His practice also includes expertise in sleep apnea treatment and diagnostic procedures such as dobutamine stress echocardiograms and pulmonary function testing.
Overview based on verified provider data
Quick Facts
- 37 years of experience
- University Of Missouri Columbia School Of Medicine
- 1 specialty
- 1 board certification
- 4 hospital affiliations
- 2 office locations
- Male
Office Locations
Dr. Thomas M Defer has 2 locationsWashington University School Of Medicine
660 S Euclid AveSaint Louis, MO 63110 Tel: (314) 362-8901
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed
Compare with Similar Doctors
 |  |  | |
| Dr. Thomas M Defer, MD | Dr. Sreelatha Varma, MD | Eric Harker | Dr. Michael Albrecht, MD |
| Internal Medicine | Internal Medicine | Internal Medicine | Internal Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 37 Years of Experience | 25 Years of Experience | 14 Years of Experience | |
| No Virtual Visit Option | No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available |
| Speaks English | Speaks English | Speaks English | |
| Saint Louis , MO | Saint Louis , MO | Lyons , CO | LANSING , KS |
| Med School: University Of Missouri Columbia School Of Medicine | Med School: Duke University School Of Medicine | Med School: University Of Kansas School Of Medicine | |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Thomas M Defer
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. Thomas M Defer has the following specialty
Certifications, License, & Education
37 Years Experience
Dr. Thomas M Defer holds an expired medical license in the state of Missouri.
Medical License
Medical Doctor with an expired medical license in the state of Missouri that expired in 2026.
Education & Training
Medical School
Graduated from University Of Missouri Columbia School Of Medicine in 1989.
NPI Number
Dr. Defer's NPI number is 1023036464.
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Frequently Asked Questions
- Where is Dr. Thomas Defer's office located?
- Dr. Thomas Defer's office is located at 660 S Euclid Ave, Saint Louis, MO, 63110.
- Does Dr. Thomas Defer accept my insurance?
- You can see the insurance plans that Dr. Thomas Defer accepts on their Vitals profile.
- How can I make an appointment with Dr. Thomas Defer?
- You can find contact information for Dr. Thomas Defer here on Vitals.
- Does Dr. Thomas Defer accept virtual/telehealth appointments?
- Dr. Thomas Defer has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Is Dr. Thomas Defer accepting new patients?
- Dr. Thomas Defer has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
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